Features:

• 9 Groups, 13 Elements Lens Construction
• Rotation Type of Zooming
• 9 Diaphragm Blade Number
• F/32 Minimum Aperture
• 59 inch Minimum Focus Distance (1.5m) in normal setting, 37.4 inch (0.95m) in macro mode f=180mm-300mm range

Details: Tamron Auto Focus 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens for Canon Digital SLR Cameras (Model A17E)